Error in T.code TRIP

Hi

At present, my trip status was "Request Approved" and "Transferred to FI/ Transferred tp Pay". When i am creating the Expense Type through TRIP, am not able to create the expense types. Am getting the below error message.

"Accounting status not 'documents posted', trip can not be changed

Message no. 56821

Diagnosis

A trip can not be changed if

it has accounting status 'transferred FI' or 'cancellation posted FI'

and the trip transfer documents have not yet been posted.

Procedure

Go to posting run management and post the trip transfer documents. After that, make your trip changes."

looking forward for your inputs please

REGARDS,

Molleti.